John h



(No Model.)

J. H. SWARTZBAUGH.

. SPARK ARRESTER. No. 374,562. Patented Dec. 6, 1887.-

N. PETERs PImla-Limugnphcn waning. 0.1;

' U TED STATES PATENT 'FFIGEa i JOHN H. SWARTZBAUGH, or TIFFIN, 01110,ASSIGNOR or ONE-HALF l( WILLIAM HY'IER, or SAME PLACE.

SPARK-ARRESTER.

SPECIFICATION forming part of Letters Patent No, 374,562, dated December6, 1887;

Application filed September 15, 1887. Serial No. 240.7:8. (No model.)

To aZZ whom, it may concern- Be itkuown that I, J OHN H. SWARTZBAUGH,

a citizen of the United States, residing at Tiffin, in the county ofSeneca and State of Ohio, have invented certain new and usefulInfprovements in Spark-Arresters, of which the able point of deposit,such as the ash-pan or smoke-box; and it consists in the constructionand arrangement of parts hereinafter described, and particularly pointedout in the claims appended.

The invention will be fully understood from the following descriptionwhen taken in connection with the annexed drawings, in which- Figure 1represents a vertical sectional view of my improved spark-arresterattached to a boiler of ordinary construction; Fig. 2, an enlargedsectional view of the smoke-stack detached; and Fig. 3, a detail view ofa supporting or re-enforcing plate, which will be fully hereinafterdescribed.

Referring to the drawings by letter, A designates the boiler, 13 thesmoke box or chamber, and O the smoke-stack, which in this instanceconsists of a short cylinder or tube D, secured to and communicatingwith the smoke-box in the usual manner, and having attached to its upperend an enlargement, E, which consists of a central band, a, considerablylarger in diameter than the tube D, having attached to or formedintegral with it the two contracted or conical portions b, the lower oneof which is secured to or formed integral with the short tube D, asshown. Extending into this enlargement of the stack, through the upperend of the upper conical portion b, is the outlettube F, which is boltedor riveted to an annular flange upon the upper edge of the said uppercontracted portion, and depends to a point about on a longitudinal linewith the center of the large band a. To the lower end of this tube issecured a short tubular extension, G, which is made adjustable to adaptthe invention to boilers of different drafts, as will more fullyhereinafter appear. Supported in the interior ofthe enlargement by meansof angle irons c is a funnel, H, which has formed upon or secured-to itsupper edge a band or short cylinder, I, which surrounds and extends up ashort distance above the lower edge of the outlet-pipe. To the lower ordischarge end of the funnel is secured a spark-conveying pipe, J, whichis bent and passed through an aperture in the short tube D, and is thencarried down so as to discharge the sparks and cinders into thesmoke-box or ash-pan, as shown, respectively, in full and dotted linesin Fig. 1. Bolted to the interior of the tube D, over the aperturethrough which the sparkconveyer passes, is a re-enforcing or supportingplate, L, perforated for the passage of the conveyor. The object in thussecuring this plate is to assist in supporting the conveyertube and forma packing to prevent the passage of smoke from the stack, also tostrengthen the stack at the point where it is weakened by the aperture.

The object in attaching the adjustable extension G to the lower end ofthe outlet-pipe is to provide means for adapting the inveution forboilers or locomotives of difiereut drafts, the extension being loweredfor a boiler of a strong draft, and vice versa.

In operation the sparks and cinders are carried up around the funnel inthe stack'by the draft, and impinge against the interior of the uppercontracted portion of the enlargement, and are thereby deflectedinwardly toward the outlet-pipe, whence, they drop down into the mouthof the funnel and are conveyed away by the pipe attached thereto, asshown by the arrows in Fig. 2, the smoke and gases passing down a shortdistance into the funnel, and from thence out through the outlet ordischarge pipe.

It will be observed that by means of the contracted upper portion of theenlarged stack, and the regulating device attached to the lower end ofthe discharge-pipe and projecting into the collecting-funnel, I obtain ath oroughly-effective spark and cinder arrester, which may be readilyadjusted to suit boilers of diflerent drafts, and one which will notretard the draft sufliciently to impair the efliciency of the boiler.

Having. thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

1. The combination of the boiler, the stack provided with an enlargementconsisting of the central large band, a, and the twooppositely-contracted portions b, the funnel supported with mouth upwardin the said'enlargement and provided with a conveyer-pipe at its lowerend, and an extension, I, at its upper edge, the outlet-pipe suspendedconcentrically within the said enlargement and extending into theextension on the funnel a short distance, and the adjustable extensionG, attached to the lower end of the outlet-pipe, all arrangedsubstantiallyas and for the purpose described.

2. In a spark-arrester and conveyer, the combination of the boiler, thestack connected thereto and provided with an enlargement, 0,

consisting of the two oppositely-contracted portions b, connected byashort central band, a, the funnel H, supported with its mouth up- 25ward within the enlargement, and provided with a short tubularextension, I, on its upper edge, the bent conveyer-tube connected to thelower discharge end of the funnel and passing out through the side ofthe stack, the plate L, 30 bolted to the stack, where it is perforatedand provided with an aperture for the passage of the conveyer-tube, theoutlet-pipe suspended within the enlargement, as described, and theextension G, adj ustably attached to the lower ,5 end of theoutlet-pipe, all arranged substantially as described.

In testimony whereof I afiix my signature in presence of two witnesses.

JOHN H. S'WARTZBAUGIL Witnesses:

(3130. S. YINGLING, GEo. R. Huss.

